Descriptive Analysis of Internal Registry Data on Cemented and Uncemented Total Hip Arthroplasty

Background: As total hip replacement cases increase year after year, registry-wide data becomes increasingly important in order to assess pathology distribution, reimbursement efficiency as well as physician performance. In order to assess all these factors patient evolution needs to be documented after surgery as well, but the main impediment to doing this is losing patients to follow-up. For this reason, the present study aims to perform a descriptive analysis of the hospital's internal registry data as well as to determine what percentage of patients can be expected to return to follow-up after total hip replacement. Methods: A query of the hospital's internal registry data in the last years was performed. Patient demographics, county distribution as well as ICD-10 code usage were documented. Data standardization was performed to determine the probability and cumulative distribution of the patient's age. The chi2 test of independence was used to assess whether there is a correlation between the patient's gender and ICD-10 codes. Pot hoc power analysis was performed to assess the accuracy of correlation analysis. Results: Only 29.6% of the patients undergoing total hip replacement are from the county within which the hospital is located. 25% of the patients were under 60 years old. Conclusions: Current registry data reveals that most patients undergoing total hip replacement are around 67.5 +/- 11 years old, suffer from unilateral or bilateral primary or secondary hip osteoarthritis and only 29.6% of them are likely to return to follow-up.